#!/usr/bin/perl
#
# SCTP Conformance Test Suite Implementation
# (C) Copyright Fujitsu Ltd. 2008, 2009
#
# This file is part of the SCTP Conformance Test Suite implementation.
#
# The SCTP Conformance Test Suite implementation is free software;
# you can redistribute it and/or modify it under the terms of
# the GNU General Public License version 2 as published by
# the Free Software Foundation.
#
# The SCTP Conformance Test Suite implementation is distributed in the
# hope that it will be useful, but WITHOUT ANY WARRANTY; without even
# the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
# PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU CC; see the file COPYING.  If not, write to
# the Free Software Foundation, 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# Please send any bug reports or fixes you make to the
# email address(es):
#    networktest sctp <networktest-sctp@lists.sourceforge.net>
#
# Or submit a bug report through the following website:
#    http://networktest.sourceforge.net/
#
# Written or modified by:
#    Hiroaki Kago <linuxsctp-kg@ml.css.fujitsu.com>
#    Wei Yongjun <yjwei@cn.fujitsu.com>
#
# Any bugs reported given to us we will try to fix... any fixes shared will
# be incorporated into the next SCTP release.
#
##############################################################################
BEGIN {	$V6evalTool::TestVersion = '$Name: REL_1_0_0 $'; }

use lib "../common";
use V6evalTool;
use SCTP;

%pktdesc = (
	sctp_chunk_init_ack_bad_len	=> "Send SCTP CHUNK_INIT_ACK (Invalid Chunk Length)",
	sctp_chunk_abort_bad_len	=> "Recv SCTP CHUNK_ABORT (Protocol Violation - Invalid Chunk Length)",
);

$IF0 = Link0;

vCapture($IF0);

sctpCheckEnv($IF0);

sctpStartClient($IF0);

vLogHTML('<B>================ Main Test =================</B>');

%ret = vWarpRecv($IF0, 10, 0, 0, sctp_chunk_init_rcv);
if($ret{status} != 0 || $ret{recvFrame} ne sctp_chunk_init_rcv) {
	vLogHTML('Cannot receive SCTP CHUNK_INIT<BR>');
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>'); 
	exit $V6evalTool::exitFail;
}

sctpFetchInitField(\%ret);

vSend($IF0, sctp_chunk_init_ack_bad_len);

%ret = vWarpRecv($IF0, 10, 0, 0, sctp_chunk_abort_bad_len);
if($ret{status} != 0 || $ret{recvFrame} ne sctp_chunk_abort_bad_len) {
	vLogHTML('Cannot receive SCTP CHUNK_ABORT<BR>');
	vLogHTML('<FONT COLOR="#00FF00">NG</FONT>'); 
	exit $V6evalTool::exitFail;
}

vLogHTML(OK);
exit $V6evalTool::exitPass;

######################################################################
__END__

=head1 NAME

  GEN_InvalidChunkLen.seq - Generation of error cause Protocol Violation (Invalid Chunk Length)

=head1 PURPOSE

  To check that if INIT-ACK chunk is received with invalid chunk length
  then the endpoint should send ABORT message with cause Protocol
  Violation.

=head1 SYNOPSIS

=begin html
<PRE>
  <A HREF="./GEN_InvalidChunkLen.seq">./GEN_InvalidChunkLen.seq</A> [-tooloption ...] -pkt <A HREF="./GEN_InvalidChunkLen.def">./GEN_InvalidChunkLen.def</A>
    -tooloption : v6eval tool option
  See Also: <A HREF="../common/STD_PKT_COMMON.def">../common/STD_PKT_COMMON.def</A>
            <A HREF="../common/SCTP_COMMON.def">../common/SCTP_COMMON.def</A>
</PRE>

=end html

=head1 PRE-TEST CONDITION

  Association is not established between endpoint A and B. Arrange data 
  in endpoint A such that INIT-ACK chunk with invalid chunk length is
  sent to endpoint B.

=head1 TEST PROCEDURE

  Endpoint A                           Endpoint B                ULP
  (CLOSED)                             (CLOSED)

                  <-----------------    INIT

   INIT-ACK       ----------------->
   (with Invalid Chunk Length)
                  <-----------------    ABORT
                                        (Protocol Violation)

  TEST DESCRIPTION:

  1. Send INIT-ACK chunk from endpoint A to B with invalid chunk
     length.
  2. Check A: ABORT should be received at endpoint A.
  3. Check B: Error cause in ABORT is set to "Protocol Violation".

=head1 NOTE

  None

=head1 REFERENCE

  RFC 4960

  3.3.10.13.  Protocol Violation (13)

    Cause of error
    --------------

    This error cause MAY be included in ABORT chunks that are sent
    because an SCTP endpoint detects a protocol violation of the peer
    that is not covered by the error causes described in Section 3.3.10.1
    to Section 3.3.10.12.  An implementation MAY provide additional
    information specifying what kind of protocol violation has been
    detected.

        0                   1                   2                   3
        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |         Cause Code=13         |      Cause Length=Variable    |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       /                    Additional Information                     /
       \                                                               \
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+